This seismograph was invented by Zhang Heng in A.D.132,as the world's first instrument to sense earthquakes.It used the principle of inertia, using pendulum and lever mechanics.
This seismograph was invented by Zhang Heng in A.D.132,as the world's first instrument to sense earthquakes.It used the principle of inertia, using pendulum and lever mechanics.
公元132年张衡发明制造侯风地动仪是世界上第一台感知地震的仪器。地动仪利用惯性原理、以摆和杠杆机械为主的结构模式，测定地震和方向。